Marker for surveyors&#39; tapes.



No. 773,016. PATENTBD 00T. 2 5, 1904. y

1 W. L. E. KEUFFEL. MARKER POR SURVBYORS TAPES.

l APPLIATION FILED SEPT. 24, 1902.

NO MODEL.

v UNITED STATES Patented October 25, 1904.

PATENT @Fries WILLIE L. E. KEUFFEL, OF HOBOKEN, NEW JERSEY, ASSIGNOR TOTHE KEUFFEL & ESSER COMPANY, OF HOBOKEN, NEINT JERSEY, COR- PORATION OFNEW JERSEY.

MARKER FOR SURVEYORS TAPES.

SPECIFICATION .forming part of Letters Patent No. 773,016, dated October25, 1904.

Application filed September 24, 1902. Serial No. 124,625. (Nomodel.)

To all whowb t may concern:

Be it known that I, WILLIE L. E. KEUFFEL,

a citizen of the United States, and a resident of the city of Hoboken,in the county of Hudson and State of New Jersey, have invented certainnew and useful Improvements in Markers 'for Surveyors Tapes, of whichthe following is a specification.

My invention relates to surveyors tapes;

IO and it consists of providing the same with a marker which affords asure and efficient v means of accurately indicating a selected point inthe graduations.

In the drawings; Figure lisa plan viewof a portion of a form ofsurveyors tape now commonly employed in the trade. Fig. 2 is a similarview of my improved tape. Fig. .3 is an enlarged transverse sectionalview across one .of the grooves e and rivet Z1 in the construction shownYin Fig. 2. Fig. 4 is an enlarged detail plan view ofv the markerextended before it is attached to the tape. Fig. 5 is a perspective viewillustrating one mode of using my improved marker, and Fig. 6 is anenlarged detail plan view of a modified form thereof. A,

In the drawings, a is the body of the tape, which may be made of steelor other suitabl material.

' Z) b are rivets secured to the body of the tape at certain intervalsand which constitute one of the means by which it is graduated, y and cis the marker by which prime graduations intermediate ofv the otherrivets are indicated. In the old form of'tape (illustrated in Fig. 1)this marker is commonly made of a flat plate of metal having squarecorners and which is folded'over and riveted to the body of the tape, asshown. In using thisold form of tape an error has frequently arisen,because it is difficult to Vplace the central point of the marker ontheupper edge of the: tape alongside of the plumb -`line or similarstartingpoint for measurement precisely coincident with the centralplane passing through the graduating-rivet and transverse to the generalaxial line ofthe tape. If the tape itself were notched, so as toindicate more precisely the point of graduation coincident with thecenter of the marker, it would weaken the tape.

My improved form of marker, which provides a simple and efficient meansof marking this point, obviates all of the disadvantages referred to.rIhe square corners of the old vmarker are also apt to catch in grassor'on the 55 edges of stones and the line.

My improved markers are made in the usual manner out of one plate ofmetal, as shown in Fig. 1:;'but a central aperture is punched at d, asindicated, in addition to the apertures CZ provided for the insertion ofthe rivets, and recessess d are cut away. The aperture is formed ign theline intersected by the fold, so that when the improved form of markerthus made is folded over the tape, as shown in Fig. 2, the aperture Zforms in the folded edge of the marker a transverse groove e, which isplainly observed or can be easily felt by running said folded fingeralong the edge, and the tape itself is not weakened in any manner, andthe marker is not liable to catch in contiguous objects. The recesses d"form a smooth rounded edge e for the marker on each side. y

In using my device the plumb-line can be `heldagainst the transversegroove c in the, "manner illustrated in'Fig. 5 and which will be readilyunderstood, thus aording a certain means o f knowing the starting-pointfrom which the measurement is taken, the 8O notch preventing theplumb-cord from slipping.

In Fig. 6 I have illustrated a modified form of my device in which themedial line of the marker is represented by a long groove e, and thefastening-rivets are secured on each side of the same. In making thisform of marker, of course four holes instead of two would have to bepunched inthe metal plate to admit o f the insertion of the four rivetsb. By means of this construction the plumb-cord is prevented fromslipping also.

Having described my invention, what I claim as new isl. A marker for asurveyors tape or the like, consisting of a plate folded to encircle oneedge of the tape and secured to said tape, l plate being' formed withinits body wit said plate having its closed side provided with roundedcorners and externally substantially parallel to the line of the tapeand its said closed sidegrooved in a plane coincident with one of theprinie graduetions of the tape.

2. The combination with a snrveyors tape or the like, of a markerconsisting of n platte folded over and secured to the tapeiand hevingits closed side formed to provide :t groove therein, substantially esdescribed and for the purpose set forth.

3. The herein-described marker for surveyors tapes and the like,consisting of a plate folded between its sides to inclose an edge ot'said tape, said marker having a groove in its folded edge, substantiallyas described and for the purposes speciiied.

4. The herein-described marker for surveyors tapes and the like,comprising a plate folded to inolose an edge of the tape, the seid :inaperture and its seid fold being on :i line which extends through sitid:iportn re, whereby n groove is formed in the closed edge ol the marker.

The herein-described ninrkcr Ylor surveyors tapes and the like,comprising :i plate huying :in taperture in its body :ind recesses inits edges at opposite sides of szlid nperturc, the said plate beingfolded intermediate oll its sides and on :t lino which extends throughsaid aperture und recesses, substantially :is described and for thepurposes speciied.

fitness iny hand this 18th day of September, 1902,21t the city of NewYork,in the county and Stato of New York.

lVlLLlE L. E. KEUFFEL.

lVitnesscs:

HERMAN H. S'rUTZ, O'r'ro FREUND.

